#include<iostream>
#include<pthread.h>
#include<string>
#include<unistd.h>
#include<cstdio>


int tickets = 1000;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;


void* start_routine(void* args)
{
    std::string name = static_cast<const char*>(args);
    while(true)
    {
        pthread_mutex_lock(&mutex);
        pthread_cond_wait(&cond,&mutex);
        printf("%s->%d\n",name.c_str(),tickets--);
        pthread_mutex_unlock(&mutex);
    }
}
void test()
{
    pthread_t t[5];
    for(int i = 0;i<5;i++)
    {
        char* name = new char[64];
        snprintf(name,64,"thread %d",i + 1);
        pthread_create(t+i,nullptr,start_routine,name);
    }
    while(true)
    {
        sleep(1);
        //pthread_cond_signal(&cond);
        pthread_cond_broadcast(&cond);
        printf("main thread wakeup one thread...\n");
    }
    for(int i = 0;i < 5;i++)
    {
        pthread_join(t[i],nullptr);
    }
}
int main()
{
    test();
    return 0;
}